import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../views/login.vue'
import Home from '../views/Home.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: '/login',
    component: Login
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home
  }

]

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to将要访问的路径
  // from从那个路径跳转过来
  // next是一个函数表示放行
  // next()  next('/login')
  if (to.path === '/login') {
    return next()
  }
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) {
    return next('/login')
  }

  next()
})

export default router
